23 July, 12:13
A rectangle's length is 8cm more than three times its width it the perimeter is 128 cm find the length
23 July, 13:58
The length is 50. You solve it by making an equation out of the information given. the rectangle's length (l) is 3 times its width (w) and its perimeter (p) is 128. So in order to solve this you need an equation to find the perimeter, isolating w to find l. It'll look something like this:
(3w+8) + (3w+8) + w+w=128
? You combine all like terms turning it into:
2 (4w+8) = 128
you use the value of w to solve for l as follows:
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